package kzy.config;

import kzy.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @Author 大溪地
 * @create 2023年05月24日18:41
 * 拦截器
 */
@Slf4j
@Configuration
public class WebMvcConfig  extends WebMvcConfigurationSupport {

	@Override
	protected void addResourceHandlers(ResourceHandlerRegistry registry) {
//	addResourceHandler 访问这个地址的时候 到addResourceLocations 这里面寻找资源
		registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
		registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
		super.addResourceHandlers(registry);
	}


	/**
	 * 扩展mvc框架的消息转换器
	 * @param converters
	 */
	@Override
	protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
		log.info("扩展消息转换器...");
		//创建消息转换器对象
		MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
		//设置对象转换器，底层使用Jackson将Java对象转为json
		messageConverter.setObjectMapper(new JacksonObjectMapper());
		//将上面的消息转换器对象追加到mvc框架的转换器集合中
		converters.add(0,messageConverter);
	}
}
